Wages (Kitab Al-Ijarah)
Dawud :: Book 23 : Hadith 3521
Narrated Aisha, Ummul Mu'minin:
The aunt of Umarah ibn Umayr asked Aisha: I have an orphan in my guardianship. May I enjoy from his property? She said: The Apostle of Allah (peace_be_upon_him) said: The pleasantest things a man enjoys come from what he earns, and his child comes from what he earns.